Hi
A user was able to log into my site using:
1' and '1' or '1
in the username and password box.

I ran the query 

SELECT * FROM members WHERE name = '1' and '1' or '1' AND password = '1' and 
'1' or '1'

And it returned all rows. Can someone explain to me why this happens, and if 
the steps I took (replacing the ' with a blank space when the user submits the 
login form) is enough to prevent a similar "hack"

Appreciate any feedback.
--
Dave

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